Brake tester



April 18, 1933.

F. S. BELKNAP BRAKE TESTER F iled Dec. 15, 1929 Patented Apr. 18, 1933 lrhis im eiitib relates to newfiiidiiisfiii ingested end dfihiiv ei'le ifibrmed improvements in testingdevices; and particularly to devices fortesting the efliciency of automobile brakesz? Y zprovide a :braketesting devicei which "is simpleninr construction, 1 and. which i canthe readily applied to l the Wheel of an automobile, and successfullyoperated, regardless .v-iating the waste :ofvfloonspa'ce occupied ,bythe idevlees of this charactelwnow. '-'1nuse"1 n service stations' andgarages. 1

' aFigure 2 is; -a-, side: elevation got the same.

:kisFigure 3i? is an elevation of a modified formofr'handle-levermatFigure 41=sh0ws as modification "of. ,the gaugeyrwherein" spring is),used; instead ,of oi1orfairl a 1Referring partieularly drawing,represents awheel of an automobile vhiehhas the usual tirelli there;

on, and the central outwardly projecting hubfilQirj; :C E i Disposewheel is ialsubstantiallyIUehaped member 13 from the-center of the bightportion of mounted in this stem is the member 15, which has its outerend provided vwith a hook 16, for engagement over the outer face of thetire 11. The terminal of each ofthe that portionof the tirediametrically oppo site to that with which the hook 16 is en gaged.Formed integrally with the frame member 13, and extending transverselyof thebight thereof, is a bar 18, and pivotally mountedon the center ofthis bar is one end a of a lever 19, said lever extending upwardly to apoint at the side ofthe tire, where it is 11 15. rovided with a suitablehandle or grip 20.

The principalobject of 'the iiive'ntion to of wherethevautomobileiisilocated, thus iob d the outer which projects the stem 14,anda'djustably arms of the U-shaped member 13 is also" formed with ahook 17 for engagementoyer With. t eatwo diam tric y opp 1011b wardlyeii tending arms I21.-

,1 :Pivoted on the outer end Q portion-inf; one of the-arms of the'frame" l3,- and;extending transversely of the5 frame,*,and across theother arm thereof; is a lever r oriarm 22,1 the free end of which isproperly guided byithe member-23, carried i by said other, arm;'fivotally connected; [to the intermediate; portion o f th'e arm 22,sby6 0 thecommonapivot Qhfare the-supperends of" the links and 26.otheriend offeach of, the links is formed with a longitudinally ext i ga 5 2 ough: wh his d po e apini28 ,carried,by the outerend'ofwan arm 1 a21,. whereby said links are pivotally and slidably connected with thelever Mounted onehr qf 'ithe am 'b l h i ft e n g fa he i 2, s. alv rtiel y d s-Peed w cylinder 28',andalso, mountedonsaid frame 0 army adjacent the lower end of the.-cylinder,'

is a; pressure gauge 29, said gaugebeing'con- 1 eated with the cylinder,by means; of the pipe 30 Movable in ,the cylinderisithe plunger31,;thestem 32 ofwhich isypivotally a connected withthe free endoftheglever" or arm22. flhe plungerfl l maybefadjustably connectedfiwithstem 32.

' In Figure ii there is shown f r of e le r, w e e i'$ Q 1 1 5 wetending upwardly from the head or pivotal,

end thereoflthis lever has the-Qoppositeext n h ifieahe in han p w 34;Qh their outer-ends, whichf are grasped by the workman. Thelinks 25 and26" are:connected 3 .as h ti rmf i i a a Inthe operation; of the deviceithe work .Ihan engages the hooks l6 and 17 with the periphery of thetire of the wheel, and tightens same bymeansfof the -nut of themember15.. The r operator then 'graspsjl the with these a extensions :in] themanner brakes have been set. .The resistancelto this rotatiyeiIIlQYQl'IlQIlhQWllLShOW on the gauge, Wa ea on he iac't h h Linkhperate tolrqck the ,"arm do nw'ardly; whereby to Pu h therl hset:31e eiei hthei r iihle

